Answer:
1-if u are answering light waves question , then the answer is translucent mirror or objects
2- Oxygen
3- compass
Answer:
when the water is frozen, the molecules are tight and bunched together because its a solid. Although that the molecules seem to be tight, it does not meant that the molecules are not moving. The molecules in H 2 O solid form makes them move fast as in vibration. If the H 2 O was in liquid form, the molecules would be spread out and there would be plenty of room to move. But if the H 2 O is a gas, the molecules are even more loose that the liquid and they do whatever they choose to.
Explanation:
1. Change in temperature
2. Odour being produced
3. Gas bubbles being formed
4. Solid precipitate is formed
5. Permanent change in colour
6. Light is being produced
Answer:
5.62 * 10^-13 moles per liter
Explanation:
The pH of a solution is the negative logarithm to base 10 of the concentration of hydrogen ions. What we simply do here is to input the information in the question into the equation:
pH=−log10[H⁺]
Here we know the pH but we do not know the concentration of the hydrogen ions.
12.25 = -log [H+]
log[H+] = -12.25
[H+] = 10^-12.25
[H+] = 5.62 * 10^-13 moles per liter
